Silva style iTechworld compass is so that you know the direction of North.

When setting up a satellite dish it is critical to know which way is North. The iTechworld Silva Compass has been designed specifically for satellite TV dish alignment, it is an essential tool when aligning your satellite dish to Optus C1. Using the iTechworld Silva compass you will be able to find the bearing for Optus C1 quickly and efficiently. The iTechworld Silva Compass comes with a handy lanyard so that you can keep it around your neck for quick reference and use.